Choose the correct statement 1 Meteors burn when they enter earth rsquo s ...........

Science Affairs Physics

Choose the correct statement

1. Meteors burn when they enter earth’s atmosphere due to chemical reaction of the elements present in meteor with gases.

2. Hovercraft uses high pressure air as lubricant to overcome friction

3. In a machine more friction will reduce energy consumption

4. Friction between two surfaces can produce heat and electricity

Select the correct answer using the codes given below

1 and 2

1, 2 and 3

2 only

2 and 4

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Explanation:

1st and 3rd statements are incorrect.
Meteor showers occur when dust or particles from asteroids or comets enter Earth's atmosphere at very high speed. When they hit the atmosphere, meteors rub against air particles and create friction, heating the meteors. The heat vaporizes most meteors, creating what we call shooting stars.